Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Denso Corporation

Aisin Seiki Kabushiki Kaisha

Mitsui High-tec Incorporated

Other

Nippon Steel Corporation

Komatsu Corporation

Shinya Sano

Yasuhide Yagyu

Toshimitsu Takahashi

Keiu Kanada

Takeshi Tomonaga

Hiroyuki Hattori

Yuta Watanabe

Takuya Nomura

Shinichi Otake

Masayuki Ikemoto

Kazufumi Serizawa

Masaaki Ito

Satoshi Arai

Kohei Yoshida

Eiji Yamada

Shuuji Hori

Kazuaki Haga

Kensuke Komori

Ken Takeda

Tsuyoshi Miyaji

Taketo Takeuchi

Ryosuke Utaka

Masahiro Izumi

Takashi Matsumoto

Kazutaka Tatematsu

Tatsuhiko Mizutani

Daisuke Ichigozaki

Masaaki Kondo

Masashi Matsumoto

Yusuke Hasuo

Go Kato

Shingo Fubuki

Hiroyuki Chikugo

Mayumi Takazawa

Hisanori Koma

Akifumi Kurokawa

Tomohiro Inagaki

Atsushi Utsunomiya

Suguru Gangi

Eiji Yanagida

Ken Noda

Toshiaki Hijima

Tatsuhiko Hirano

Fumiaki Arikawa

Yoshitada Yamagishi

Hirokazu Arakawa

Yoji Sato

Yoshinari Nakagawa

Yasuo Ohsugi

Motoya Kanbara

Mutsumi Ono

Hiroaki Wakimoto

Takanori Kadota

Isao Kato

Yuuta Hashimoto

Takefumi Komaki

Toshiyuki Tonuma

Kei Enomoto

Takafumi Ogisu

Hiroki Tsuboi

Masakazu Nagaishi

Naoto Saito

Keiji Kondo

Tsuyoshi Hamaya

Yu Hirai

Hiroki Nakane

Kiyotaka Saitou

Syo Yamaguchi

Takeaki Unno

Yukiyasu Sugiura

Kento Ida

Minoru Anai

Provided is a rare earth magnet that allows suppressing deterioration of magnetic properties and a method for manufacturing the same. The rare earth magnet of the present disclosure includes a magnet body containing a rare earth element R1, a transition metal element T, and boron B and includes a main phase. A region in the vicinity of a corner portion of the magnet body of a constituent surface constituting a surface of the magnet body is a processed surface on which a removal process has been performed, and a region closer to a center than the region in the vicinity of the corner portion of the constituent surface is a non-processed surface on which the removal process is not performed.

Rare earth magnet and method for manufacturing the same

In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Axial gap motor with curved rotor and stator cores

A motor includes a rotor fixed to a rotary shaft, a stator arranged so as to surround the rotor with a gap from the rotor in a radial direction orthogonal to an axis direction of the rotary shaft, and a case accommodating the rotor and the stator. The rotor includes a plurality of rotor cores made from a soft magnetic material, and a rotor fixing member that fixes the rotor cores. The stator includes a plurality of stator cores made from a soft magnetic material, a stator fixing member that fixes the stator cores, and coils wound around the stator cores, respectively. The motor includes at least two sets of the rotor and the stator, and the sets are stacked in an axis direction of the rotary shaft.

Motor

A rotor manufacturing method is a method that allows magnetized magnets inserted in second magnet holes of a second rotor core to be inserted, while retaining magnetism, into first magnet holes of a first rotor core. This method includes a placing step of placing the second rotor core on a first end surface, in a stack thickness direction, of the first rotor core such that the second magnet holes overlap the first magnet holes, and an extruding step of extruding the magnetized magnets from the second magnet holes toward the first magnet holes using a non-magnetic jig.

Rotor manufacturing method

A rotor has a plurality of magnetic poles aligned in a circumferential direction, each magnetic pole includes a first magnet equipment portion and a second magnet equipment portion positioned more toward an inner circumferential side than the first magnet equipment portion, the second magnet equipment portion has a pair of inner magnet holes placed symmetrically with respect to a center of the magnetic pole, and one or more inner magnets equipped in each of the inner magnet holes, each inner magnet hole has a bent line shape with one or more points of bending in an axial direction view, and an end, on a center side in a circumferential side of the magnetic pole, of the inner magnet hole is expanded on both sides in a thickness direction thereof, and functions as a magnetic barrier having a larger thickness than the inner magnet.

Rotary electric machine

A method of manufacturing a rotor includes mounting a plurality of core members to a shaft in a state by inserting the shaft into a shaft hole that penetrates through the plurality of core members in a height direction. An inner diameter of the shaft hole is larger than an outer diameter of the shaft. The method includes pressing the plurality of stacked core members together in the height direction to form a stack in which the plurality of core members are located adjacent to each other, and the shaft hole is engaged with the shaft.

Method of manufacturing a rotor

A rotor that includes a permanent magnet; and a rotor core that has a magnet placement hole in which the permanent magnet is disposed, wherein the stress relaxation magnetic flux suppression hole is formed such that a total width of a minimum width of a first magnetic flux passage between a portion of the stress relaxation magnetic flux suppression hole on a first side in the longitudinal direction and the magnet placement hole and a minimum width of a second magnetic flux passage between a portion of the stress relaxation magnetic flux suppression hole on a second side in the longitudinal direction and the magnet placement hole is less than a total length of a length of the first magnetic flux passage in the longitudinal direction and a length of the second magnetic flux passage in the longitudinal direction.

Rotor with stress relaxation magnetic flux suppression holes with flux paths width less than length of the hole

A rotor for a rotary electric machine, the rotor including: a rotor core; a rotor shaft having a tubular shape, passing through a radially inner side of the rotor core to be coupled to the rotor core, and extending along an axial direction; an oil supply path that supplies oil to the rotor shaft, a portion to be lubricated that is disposed on a first axial side with respect to the rotor core, wherein one side in the axial direction is defined as the first axial side and another side in the axial direction is defined as a second axial side; and a lubrication oil path through which oil is supplied to the portion to be lubricated.

Rotor for rotary electric machine and vehicle drive device including the rotor for rotary electric machine

In an inspection method for inspecting occurrence of a deformation in a fuel cell, a change amount between a pressure loss parameter value before an impact and a pressure loss parameter value after the impact is found, and when the change amount is a reference value determined in advance or more, it is determined that the deformation occurs inside the fuel cell. It is determined that the deformation occurs inside the fuel cell due to the impact, in at least either of a case where the change amount of a first pressure loss parameter value that is a pressure loss parameter value in a gas passage is a first reference value or more and a case where the change amount of a second pressure loss parameter value that is a pressure loss parameter value in a refrigerant passage is a second reference value or more.

Inspection method of fuel cell and inspection system thereof

A rotor for a rotating electric machine includes: a rotor core having magnet holes; magnets inserted in the magnet holes of the rotor core. Each of the magnets includes two first surfaces respectively facing outward and inward of the rotor radial direction, and two second surfaces respectively facing one side and the other side of the rotor circumferential direction. Both ends in the rotor axial direction of at least one first surface of the two first surfaces are covered with electric insulating films, and a lateral surface region between both ends of the one first surface that are covered with the electric insulating films, and the two second surfaces are covered with no electric insulating films.

Rotor of rotating electric machine and manufacturing method of the same

The rotor of the rotating electric machine includes the rotor shaft and the rotor core. The rotor shaft has the shaft refrigerant passage and the refrigerant supplying port on the outer peripheral surface of the rotor shaft, the shaft refrigerant passage extending in an axial direction, the refrigerant supplying port communicating with the shaft refrigerant passage. The rotor core has the rotor core refrigerant passage and the refrigerant receiving port on the inner peripheral surface of the rotor core, the rotor core refrigerant passage extending in the axial direction, the refrigerant receiving port communicating with the rotor core refrigerant passage and facing the refrigerant supplying port of the rotor shaft. A clearance groove part is provided at a portion that is on the inner peripheral surface of the rotor core and that faces the refrigerant supplying port of the rotor shaft, the clearance groove part extending in the axial direction.

Rotor of rotating electric machine

A method of punching a core piece having a bridge formed between a radially-outer end of a magnet insertion hole and an outer region of the core piece. The method includes providing a magnetic steel sheet and a punch configured to form the core piece, punching out the magnet insertion hole from the magnetic steel sheet, and forming a through hole that defines a radially-outer contour of the bridge by punching the magnetic steel sheet. The method includes forming the bridge between the radially-outer end of magnet insertion hole and the outer region of the core piece, and blanking the core piece, from the magnetic steel sheet, in an exterior shape with the punch while avoiding an edge of the punch from coinciding with the radially-outer contour of the bridge.

Method of punching a core piece having a bridge

A rotor of a rotating electric machine includes a rotor core, and a plurality of permanent magnets arranged in a two-layer structure having a first layer and a second layer, in the rotor core. Among the permanent magnets, first and second outermost permanent magnets located closest to each of opposite q-axes of each magnetic pole are located relative to each other, such that a radial position of an end portion on a q-axis side and a radially inner side in the first outermost permanent magnet that belongs to the first layer is spaced by a predetermined radial spacing from and is on a radially outer side of a radial position of an end portion on the q-axis side and a radially outer side in the second outermost permanent magnet that belongs to the second layer.

Rotating electric machine

A rotary electric-machine rotor includes: a rotor core made of magnetic material, the rotor core having magnet holes; magnets disposed in the magnet holes; resin portions disposed in at least part of gaps between the magnet holes and the magnets, the resin portions extending in the axial direction; and end plates disposed adjacent to end surfaces in an axial direction of the rotor core. The end plates are members made of magnetic material. The end plates cover end surfaces of the magnets in the axial direction and end surfaces of the resin portions in the axial direction, and each of the end plates having at least one holes disposed in a position that faces at least one part of the end surfaces of the magnets.

Rotary electric-machine rotor

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Toyota, Japan

Shinya Sano